Hi,
I want to use 4 pwm signals, so my first step is load the files dtbo:
*root@beaglebone:/sys/devices/platform/bone_capemgr# echo BB-PWM0 > slots*
*root@beaglebone:/sys/devices/platform/bone_capemgr# echo BB-PWM1 > slots*
*root@beaglebone:/sys/devices/platform/bone_capemgr# cat slots*
* 0: PF---- -1 *
* 1: PF---- -1 *
* 2: PF---- -1 *
* 3: PF---- -1 *
* 4: P-O-L- 0 Override Board Name,00A0,Override Manuf,cape-universaln*
* 5: P-O-L- 1 Override Board Name,00A0,Override Manuf,BB-PWM0*
* 6: P-O-L- 2 Override Board Name,00A0,Override Manuf,BB-PWM1*
but when I try to very the correct pin configurations I found this:
*root@beaglebone:/sys/devices/platform/bone_capemgr# cat
/sys/kernel/debug/pinctrl/44e10800.pinmux/pins | grep 950*
*pin 84 (44e10950.0) 00000037 pinctrl-single *
*root@beaglebone:/sys/devices/platform/bone_capemgr# cat
/sys/kernel/debug/pinctrl/44e10800.pinmux/pins | grep 954*
*pin 85 (44e10954.0) 00000037 pinctrl-single *
So I open the dts file BB-PWM0-00A0.dts:
[...]
*fragment@0 {*
* target = <&am33xx_pinmux>;*
* __overlay__ {*
* pinctrl_spec: Panel_Pins {*
* pinctrl-single,pins = <*
* 0x150 0x03 /* (A17) spi0_sclk.ehrpwm0A */*
* 0x154 0x03 /* (B17) spi0_d0.ehrpwm0B */*
* >;*
* };*
* };*
* };*
[...]
It uses the correct 03 mode.
Why the pin use the wrong mode after the load of the device tree?
My OS is:
*root@beaglebone:# uname -a*
*Linux beaglebone 4.1.22-ti-r59 #1 SMP Sat Apr 23 09:38:21 UTC 2016 armv7l
GNU/Linux*
Thanks
Alessio
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